Also known as APS level, Astraponotéen plus supérieure, Lago Colhué Huapí
Where: Chubut, Argentina (45.5° S, 69.0° W: paleocoordinates 47.3° S, 60.3° W)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Early/Lower Oligocene (33.9 - 28.4 Ma)
• "APS" level is Tinguirirican; also referred to as pre-Deseadan, post-Mustersan
Environment/lithology: terrestrial; lithology not reported
Size classes: macrofossils, mesofossils
Preservation: permineralized
Reposited in the MACN
Primary reference: R. Hitz, M. Reguero, A. R. Wyss and J. J. Flynn. 2000. New interatheriines (Interatheriidae, Notoungulata) from the Paleogene of Central Chile and Southern Argentina. Fieldiana: Geology (New Series) 42:1-26 [D. Croft/D. Croft/D. Croft]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 38611: authorized by Darin Croft, entered by Darin Croft on 26.04.2004, edited by Jelle Zijlstra
Creative Commons license: CC BY (attribution)
Taxonomic list
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"Eopachyrucos pliciferus" = Eopachyrucos pliciformis, Santiagorothia chiliensis
"Eopachyrucos pliciferus" = Eopachyrucos pliciformis Simpson 1967 notoungulate MACN A55-12, holotype, likely collected from this level but not known for sure
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Interhippus deflexus n. gen. n. sp.4
Interhippus deflexus n. gen. n. sp.4 Ameghino 1902 notoungulate MACN 10916, M1 or M2 (lectotype) and m3
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Proplatyarthrus longipes n. gen. n. sp.3
Proplatyarthrus longipes n. gen. n. sp.3 Ameghino 1905 edentate A left astragalus, now lost. Relocated by Simpson (1967); it is now MACN A55-9
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Meteutatus attonsus n. sp.3
Meteutatus attonsus n. sp.3 Ameghino 1902 armadillo According to Simpson (1948), type is MACN 10957, six scutes, heavily coated in manganese, and said to be from the Mustersan. This mode of preservation is typical of the Tinguirirican level at Gran Barranca (Carlini et al., 2010). Carlini et al. (2010) could not relocate the type in the MACN collection.
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